2007

5.7

2000

6.1

1968

4.4

2006

6.5

2017

6.0

2008

6.4

1986

6.0

1961

5.6

1955

7.4

1931

4.0

2021

7.8

1959

3.0

1913

0.0

1985

5.0

2016

8.0

1960

6.1

2016

1.0

2016

7.8

2005

6.5

2011

5.7